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(Anatomy) anatomy an aperture in an organ, such as the liver, esp one providing an opening for blood vessels
[C14: from Latin: gate, entrance]
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|Noun||1.||porta - an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"|
vent - external opening of urinary or genital system of a lower vertebrate
blastopore - the opening into the archenteron
aortic orifice - the orifice from the lower left chamber of the heart to the aorta
stoma - a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ)
passageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages"
porta hepatis - opening for major blood vessels to enter and leave the liver
spiracle - a breathing orifice
mouth - the externally visible part of the oral cavity on the face and the system of organs surrounding the opening; "she wiped lipstick from her mouth"
os - a mouth or mouthlike opening
fenestra - a small opening covered with membrane (especially one in the bone between the middle and inner ear)
cardia - the opening into the stomach and that part of the stomach connected to the esophagus
introitus - entrance or opening to a hollow organ or tube (especially the vaginal opening); "the introitus of the vagina"
pylorus - a small circular opening between the stomach and the duodenum
anus - the excretory opening at the end of the alimentary canal
fontanel, fontanelle, soft spot - any membranous gap between the bones of the cranium in an infant or fetus
naris - any of the openings to the nasal cavities that allow air to flow through the cavities to the pharynx
rima - a narrow elongated opening or fissure between two symmetrical parts